Four Cooling Stages

First cooling stage

Even under the most severe climatic conditions it is possible to cool water from practically any temperature down to 35 °C within an evaporative condenser without the use of a refrigeration compressor. Years of experience with concrete cooling equipment have shown that the water supply to a batching plant can reach temperatures of up to 45 °C during the summer, especially in the Gulf Countries.

This water is cooled down within the evaporative condenser to 35 °C, reducing the actual cooling capacity of the compressors by 25 %. Thus this refrigeration capacity of the first stage is free of charge.

Second cooling stage

Furthermore, it is much more efficient (by 25 %) to produce refrigeration capacity at an evaporation temperature of +7 °C than at 0 °C. Therefore the water is cooled from 35 °C to 12 °C in the heat exchanger of the second stage by the first compressor.

Third cooling stage

Then in the 3rd stage the water is cooled from 12 °C to 4 °C in the heat exchanger of the third stage by the second compressor.

Fourth cooling stage

Finally in the 4th stage the water is cooled from 4 °C to less than 1 °C in our special "ice bank system" by the second compressor. This system consists of a water tank in which plate or tube heat exchangers are installed. Around these heat exchangers ice can be accumulated without destroying the system. The water is circulated around these heat exchangers covered slightly with ice. That way the water temperature is between 0 °C and 1 °C.

Requirements on Site (CCWP and CIWP)
Water (2 bar pressure) and electric power supply, insulated cold water tank (with piping) and 2 strip foundations. Tanks available in containerized version for 57 m3 or inside prefabricated support frames for up to 150 m3.